Terrorism and cabinet duration

Terrorism can strengthen or weaken electoral support for ruling governments. We show in a simple model of coalition formation that, regardless of the direction of a public opinion shock, the impact of terrorism on cabinet duration is ambiguous. However, in an analysis of a data set including 2,400 cabinets in over 150 countries in the period 1970-2002, we find that terrorism, on average, shortens cabinet duration. This result is robust for a range of alternative terror measures and is present in both democratic as well as autocratic political regimes.